// Copyright 2015-2018 The NATS Authors
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at:
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package io.nats.streaming;

/**
 * A MessageHandler object is used as a callback to receive asynchronously delivered messages.
 */
public interface MessageHandler {
    /**
     * Passes a message to the handler.
     * 
     * @param msg - the received Message that triggered the callback invocation.
     */
    void onMessage(io.nats.streaming.Message msg);
}
